Prep : Functional and Non-Functional requirements

Functional and Non-Functional Requirements

Functional Requirements.
Functional requirement specifies what the system should do
Functional requirements specify specific behavior or functions, for example:
“Display the heart rate, blood pressure and temperature of a patient connected to the patient monitor.”

  • Administrative functions
  • Authentication
  • Audit Tracking
  • External Interfaces
  • Reporting Requirements

Non-Functional Requirements
Non-functional requirement specifies how the system should behave
Non-functional requirements specify all the remaining requirements not covered by the functional requirements. They specify criteria that judge the operation of a system, rather than specific behaviors, for example: “Display of the patient’s vital signs must respond to a change in the patient’s status within 2 seconds.”

  • Performance – Response Time, Throughput, Utilization, Static Volumetric
  • Availability
  • Recoverability
  • Maintainability
  • Security
  • Data Integrity
  • Usability

Original Source


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: